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The KCDB - the BIPM key comparison database – supports the CIPM MRA. The KCDB contains information on the internationally recognized Calibration and Measurement Capabilities (CMCs) for services available from the participating institutes, and the key and supplementary comparisons supporting these CMCs.
All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement
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CIPM MRA PARTICIPANTS
CMC statistics
CMC statistics
Comparison statistics
Key comparisons by state or economy
Supplementary comparisons by state or economy
More comparison statistics
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General physics
Acoustics, Ultrasound, Vibration
Electricity and Magnetism
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Mass and related quantities
Photometry and Radiometry
Thermometry
Time and Frequency
Chemistry and Biology
Chemistry and Biology
Ionizing radiation
Ionizing Radiation
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Added keywords act as an additional filter. Keywords separated by a space will be treated by the logical function AND automatically. You may also use OR. Keyword searches also find close matches. Placing quotation marks (") before and after the search word, e.g. "word", will allow for exact matches.
All branches
Fibre optics
Photometry
Properties of detectors and sources
Properties of materials
All services
Colour and other spectral.-int. meas. of materials
Fibre optics
Photometry
Properties of detectors
Spectral emission properties of sources
Spectral properties of materials
Spectral.-int. meas. for sources and detectors
All sub services
Absorbance, diffuse, spectral
Absorbance, regular, spectral
Angle of rotation of polarization plane, spectral
Attenuation
Averaged luminous intensity
BRDF
Chromatic dispersion
Chromaticity response
Colour rendering, Ra
Colour, emitted
Colour, surface, Lab
Colour, surface, x, y, Y
Colour, transmitted, Lab
Colour, transmitted, x, y, Y
Correlated colour temperature
Correlated colour temperature response
Distribution temperature
Ellipsometric angles phi, delta, spectral
Emissivity
Emittance, spectral
Gloss
Haze
Illuminance
Illuminance responsivity
Irradiance, spectral
Length
Luminance
Luminance coefficient
Luminance factor
Luminance responsivity
Luminescent radiance factor
Luminous exposure
Luminous flux
Luminous intensity
Modal properties
Polarization mode dispersion
Power, spectral total radiant
Radiance factor
Radiance, spectral
Radiance, total
Radiant flux, spectral
Radiant flux, total
Radiant intensity, spectral
Reflectance factor
Reflectance, diffuse, spectral
Reflectance, hemispherical, spectral
Reflectance, regular, spectral
Refractive index, spectral
Responsitivity, solar, spectral, irradiance
Responsivity
Responsivity, blackbody, total irradiance
Responsivity, laser, energy
Responsivity, laser, power
Responsivity, solar, irradiance
Responsivity, solar, power
Responsivity, spectral, irradiance
Responsivity, spectral, power
Responsivity, spectral, radiance
Responsivity, terrestrial irradiance
Responsivity, UV, broadband irradiance
Responsivity, UV, broadband radiant exposure
Retroreflectance
Transmittance, diffuse, spectral
Transmittance, regular, spectral
Wavelength
Wavelength
Whiteness
Individual service
Artefact
Blackbody
Broad band detector
Broad band detector
Broadband detector
Broadband detector
Broadband detector
Colorimeter
Colour temperature meter
Deuterium lamp
Deuterium lamp
Deuterium lamp
Diffusely reflecting material
Diffusely reflecting material
Dispersion slope, measuring instrument
Dispersion slope, optical fibre
Dispersion, measuring instrument
Dispersion, optical fibre
Display, colour space: L*a*b
Distance scale deviation, OTDR
Encircled flux, fibre optic source or fibre
Encircled flux, measuring instrument
Fibre optic power meter
Fibre optic source
Flash photometer
Fluorescent material
Fluorescent material
Fluorescent material
Fluorescent material
General detector
General detector
General detector
General detector
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General material
General source
General source
General source
General source
General source
General source, colour space: u-prime, v-prime
General source, colour space: u, v
General source, colour space: x, y
Laser
LED
LED
LED
Length, optical fibre
Liquid material
Location offset, OTDR
Loss, measuring instrument
Loss, optical fibre component
Luminance meter
Measuring instrument
Mode field diameter (MFD), optical fibre
Numerical aperture, optical fibre
Optical fibre
Optical spectrum analyser
Solar spectroradiometer
Solid material
Solid material
Spectral attenuation, optical fibre
Spectrally-neutral material
Spectrally-neutral material
Spectrally-neutral material
Spectrally-neutral material
Spectrally-neutral material
Spectrally-neutral material
Spectrally-neutral material
Spectrally-selective reflecting material
Spectrally-selective transmitting material
Spectroradiometer
Spectroradiometer
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten lamp
Tungsten source
Tungsten-based source
UV radiometer
UV radiometer
Wavelength meter
Wavelength standard
Zero dispersion wavelength, measuring instrument
Zero dispersion wavelength, optical fibre
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Bulgaria
Cambodia
Canada
CARICOM (Caribbean Community)
Chile
China
Chinese Taipei
Colombia
Costa Rica
Croatia
Cuba
Czechia
Denmark
Ecuador
Egypt
Estonia
Ethiopia
European Union
Finland
France
Georgia
Germany
Ghana
Greece
Hong Kong, China
Hungary
IAEA - International Organization
India
Indonesia
Iran (Islamic Republic of)
Iraq
Ireland
Israel
Italy
Jamaica
Japan
Kazakhstan
Kenya
Korea, Republic of
Kuwait
Latvia
Lithuania
Luxembourg
Malaysia
Malta
Mauritius
Mexico
Moldova, Republic of
Mongolia
Montenegro
Morocco
Namibia
Netherlands
New Zealand
North Macedonia
Norway
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Philippines
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Portugal
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Numerical search allows additional filtering on the measurand value and associated uncertainty. Empty minimum and maximum fields will be treated as negative and positive infinity, respectively.
Numerical search does not apply to Certified Reference Materials
All units
%
%
%
%
%
(CIE 1931 x, y)
(J/m<sup>2</sup>)<sup>-1</sup>
(dimensionless)
1/sr
A
A/(J m<sup>-2</sup>), V/(J m<sup>-2</sup>), reading/(J m<sup>-2</sup>)
A/(J m<sup>-2</sup>), V/(J m<sup>-2</sup>), reading/(J m<sup>-2</sup>)
A/(W cm<sup>-2</sup>)
A/(W m<sup>-2</sup> nm<sup>-1</sup>), V/(W m<sup>-2</sup> nm<sup>-1</sup>), reading/(W m<sup>-2</sup> nm<sup>-1</sup>)
A/(W m<sup>-2</sup> nm<sup>-1</sup>), V/(W m<sup>-2</sup> nm<sup>-1</sup>), reading/(W m<sup>-2</sup>nm<sup>-1</sup>)
A/(W m<sup>-2</sup>), V/(W m<sup>-2</sup>), reading/(W m<sup>-2</sup>)
A/(W<sup>-1</sup> m<sup>-2</sup> sr<sup>-1</sup> nm<sup>-1</sup>), V/(W<sup>-1</sup> m<sup>-2</sup> sr<sup>-1</sup> nm<sup>-1</sup>), reading/(W<sup>-1</sup> m<sup>-2</sup> sr<sup>-1</sup> nm<sup>-1</sup>)
A/(Wm<sup>-2</sup>)
A/(cd m<sup>-2</sup>), V/(cd m<sup>-2</sup>), reading/(cd m<sup>-2</sup>)
A/(lx s), V/(lx s), reading/(lx s)
A/J, V/J, reading/J, J
A/W
A/W, V/W
A/W, V/W, reading/W
A/W, V/W, reading/W
A/W, V/W, reading/W, W, dB, dBm
A/lx
A/lx, V/lx, reading/lx
C (m/s<sup>2</sup>)<sup>-1</sup>
C/(lx s), V/(lx s)
GU
J/pulse
K
K<sup>-1</sup>
V (W/m<sup>2</sup>)<sup>-1</sup>
V (cd/m<sup>2</sup>)<sup>-1</sup>
V/(W m<sup>-2</sup>) or reading/(W m<sup>-2</sup>)
V/(Wm<sup>-2</sup>)
V/W
W
W (m sr)-1
W (m<sup>2</sup>nm)<sup>-1</sup>
W (m<sup>2</sup>sr nm)<sup>-1</sup>
W (m<sup>2</sup>sr)<sup>-1</sup>
W (m<sup>3</sup>sr)<sup>-1</sup>
W (nm sr)<sup>-1</sup>
W/(m<sup>2</sup> sr nm)
W/(m<sup>2</sup> sr nm)
W/(m<sup>2</sup>V<sup>2</sup>), µV/(Wm<sup>-2</sup>), 1/m<sup>2</sup>, 1/(Wm<sup>-2</sup>)
W/(m<sup>3</sup> sr)
W/(m<sup>3</sup> sr)
W/m
W/m<sup>3</sup>
W/nm
X/J
X/J/m2
X/W
X/W/m2
X/W/m2/nm
X/W/m2/sr/nm
X/cd/m2
X/lx
X/lx/s
am
cd
cd/m<sup>2</sup>
cm<sup>-1</sup>
dB
dBm
dBm<sup>-1</sup>
dimension 1
fm
km
lm
lx
lx s
m
m/m
m<sup>-1</sup>
mJ/pulse
mW
mm
nA/lx
nm
pm
ps
ps (nm km)<sup>-1</sup>
ps (nm<sup>2</sup>km)<sup>-1</sup>
ps/nm
ps/nm, ps/nm/km
ps/nm<sup>2</sup>
ps/nm<sup>2</sup>, ps/nm<sup>2</sup>/km
reading/K
reading/W, reading/dBm
reading/dBm
s/m
s/m<sup>2</sup>
s/m<sup>3</sup>
sr<sup>-1</sup>
°
µV (W/m<sup>2</sup>)<sup>-1</sup>
µV (Wm<sup>2</sup>)<sup>-1</sup>
µm
Value
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Numerical formats using the decimal point and scientific notation are accepted, e.g. 12.3 or 3.2E+05
Uncertainty
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